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Birds of North America, Vagrant Visitors, Introduced Birds and Possibilities

Thick-billed Vireo

Viréo à bec fort

Vireo crassirostris

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Species: The Thick-billed Vireo (Vireo crassirostris) is a native bird of the Caribbean islands and is a regular visitor to the State of Florida. With no apparent defining features, other than the obviously long bill, the subtle and soft colours of this bird helps it to blend into the foliage of the trees. It feeds mainly on insects, gleaning them from the leaves and branches of the trees, moving about in a deliberate manner.

Distinctions: The male and female are similar looking in appearance. Has a noticeably large bill with a visible hook at end of upper bill, same identifying features seen in other vireos. Olive green crown, back and tail feathers. Yellow supraloral, with a partial eye ring, light yellowish-green throat, breast and undertail. Two white wing bars, and white edges on the tertials. Green edges on the primaries flight feathers.

Voice: Nasal sounding, similar sounds to other vireo types, multiple call notes. Sings throughout the day, even after breeding season.

Nesting: Three to five white eggs, speckled with brown or black spots. Suspended from a fork in branches of trees. The nest is composed of strips of wood bark, plant fibres and lined with fine grasses and spiderwebs.

Birds of North America
B L W W W Family Latin Name
5" 12.7cm 7.25" 18.4cm 0.46 oz 13g Vireonidae Vireo crassirostris

  • Summer
  • Year Around
  • Winter

Distribution: Native to a number of Caribbean islands and the islands of Bahama appears to have the largest population of this vireo species. Is a regular visitor to the Atlantic side of Florida and is considered as a vagrant.

References to Other Bird Sites:

Avibase - the world bird database

ABA - American Birding Association

AOS - The American Ornitholgy Society

ABC - American Bird Conservancy

eBird - TheCornellLab of Ornithology

NA - National Geographic

NAC - National Audubon Society

Classic Collection of North American Birds